@misc{indiciae6b0ccac7c99f, title = {Changes in requirements for certification in radiology.}, author = {D S CHILDS}, year = {1957}, doi = {10.1001/jama.1957.02980300025007}, url = {https://pubmed.ncbi.nlm.nih.gov/13475059/}, note = {Source identifier: 13475059} }